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fs2open.github.com/code/weapon/shockwave.cpp
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Kazan 864e1b5922 remove MCD complete
2004-07-26 20:47:56 +00:00

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/*
* Copyright (C) Volition, Inc. 1999. All rights reserved.
*
* All source code herein is the property of Volition, Inc. You may not sell
* or otherwise commercially exploit the source or things you created based on the
* source.
*
*/
/*
* $Logfile: /Freespace2/code/Weapon/Shockwave.cpp $
* $Revision: 2.10 $
* $Date: 2004-07-26 20:47:56 $
* $Author: Kazan $
*
* C file for creating and managing shockwaves
*
* $Log: not supported by cvs2svn $
* Revision 2.9 2004/07/12 16:33:09 Kazan
* MCD - define _MCD_CHECK to use memory tracking
*
* Revision 2.8 2004/03/05 09:01:54 Goober5000
* Uber pass at reducing #includes
* --Goober5000
*
* Revision 2.7 2004/01/30 07:39:09 Goober5000
* whew - I just went through all the code I ever added (or at least, that I could
* find that I commented with a Goober5000 tag) and added a bunch of Asserts
* and error-checking
* --Goober5000
*
* Revision 2.6 2003/10/23 18:03:25 randomtiger
* Bobs changes (take 2)
*
* Revision 2.5 2003/09/26 14:37:16 bobboau
* commiting Hardware T&L code, everything is ifdefed out with the compile flag HTL
* still needs a lot of work, ubt the frame rates were getting with it are incredable
* the biggest problem it still has is a bad lightmanegment system, and the zbuffer
* doesn't work well with things still getting rendered useing the sofware pipeline, like thrusters,
* and weapons, I think these should be modifyed to be sent through hardware,
* it would be slightly faster and it would likely fix the problem
*
* also the thruster glow/particle stuff I did is now in.
*
* Revision 2.4 2003/08/31 06:00:42 bobboau
* an asortment of bugfixes, mostly with the specular code,
* HUD flickering should be completly gone now
*
* Revision 2.3 2003/08/22 07:35:09 bobboau
* specular code should be bugless now,
* cell shadeing has been added activated via the comand line '-cell',
* 3D shockwave models, and a transparency method I'm calling edge and center alpha that could be usefull for other things, ask for details
*
* Revision 2.2 2003/03/18 08:44:06 Goober5000
* added explosion-effect sexp and did some other minor housekeeping
* --Goober5000
*
* Revision 2.1 2002/08/01 01:41:11 penguin
* The big include file move
*
* Revision 2.0 2002/06/03 04:02:29 penguin
* Warpcore CVS sync
*
* Revision 1.1 2002/05/02 18:03:13 mharris
* Initial checkin - converted filenames and includes to lower case
*
*
* 7 9/01/99 10:15a Dave
*
* 6 7/18/99 12:32p Dave
* Randomly oriented shockwaves.
*
* 5 3/23/99 2:29p Andsager
* Fix shockwaves for kamikazi and Fred defined. Collect together
* shockwave_create_info struct.
*
* 4 2/26/99 4:14p Dave
* Put in the ability to have multiple shockwaves for ships.
*
* 3 11/05/98 5:55p Dave
* Big pass at reducing #includes
*
* 2 10/07/98 10:54a Dave
* Initial checkin.
*
* 1 10/07/98 10:51a Dave
*
* 49 5/18/98 3:04p Lawrance
* Play shockwave impact sound
*
* 48 5/18/98 12:59a Lawrance
* Replace shockwave impact sound with a new "whoosh" sound that
* originates from the shockwave center
*
* 47 4/15/98 10:17p Mike
* Training mission #5.
* Fix application of subsystem damage.
*
* 46 4/09/98 7:58p John
* Cleaned up tmapper code a bit. Put NDEBUG around some ndebug stuff.
* Took out XPARENT flag settings in all the alpha-blended texture stuff.
*
* 45 3/31/98 5:19p John
* Removed demo/save/restore. Made NDEBUG defined compile. Removed a
* bunch of debug stuff out of player file. Made model code be able to
* unload models and malloc out only however many models are needed.
*
*
* 44 3/30/98 4:02p John
* Made machines with < 32 MB of RAM use every other frame of certain
* bitmaps. Put in code to keep track of how much RAM we've malloc'd.
*
* 43 3/26/98 5:26p John
* added new paging code. nonfunctional.
*
* 42 3/04/98 4:11p Lawrance
* Have area effects affect asteroids, have asteroids cast an area effect,
* fix ship shockwaves
*
* 41 2/26/98 10:08p Hoffoss
* Rewrote state saving and restoring to fix bugs and simplify the code.
*
* 40 2/22/98 12:19p John
* Externalized some strings
*
* 39 2/20/98 8:32p Lawrance
* Make shockwaves affect subsystems more realistically.
*
* 38 2/16/98 11:26a Lawrance
* ensure shockwave lasts full duration
*
* 37 2/16/98 10:04a Lawrance
* Fix broken shockwave damage.
*
* 36 2/14/98 4:42p Lawrance
* pass shockwave object (not parent) to ship_apply_global_damage()
*
* 35 2/12/98 11:54p Lawrance
* restructure rendering code to use an animation
*
* 34 2/11/98 5:38p Dave
* Put in a global inited flag for shockwaves.
*
* 33 2/02/98 8:47a Andsager
* Ship death area damage applied as instantaneous damage for small ships
* and shockwaves for large (>50 radius) ships.
*
* 32 1/26/98 11:54a Lawrance
* Don't allow Navbuoys to be affected by area-effect damage and blasts.
*
* 31 1/22/98 11:43p Lawrance
* Play sound effect when player is hit by shockwave.
*
* 30 1/14/98 4:31p Dave
* Made shockwaves apply damage correctly.
*
* 29 1/14/98 2:59p Allender
* if shockwave came from a weapon, make the shockwave's parent be the
* weapons parent.
*
* 28 12/30/97 6:44p John
* Made g3_Draw_bitmap functions account for aspect of bitmap.
*
* 27 12/02/97 4:00p John
* Added first rev of thruster glow, along with variable levels of
* translucency, which retquired some restructing of palman.
*
* 26 11/29/97 2:06p John
* made g3_draw_bitmap and g3_draw_rotated bitmap take w&h, not w/2 & h/2,
* like they used to incorrectly assume. Added code to model to read in
* thruster radius's.
*
* 25 11/19/97 10:20p Lawrance
* remove ship_shockwave from ship struct, handled in physics now
*
* 24 11/16/97 8:52p Andsager
* For shockwaves, update physics damping info in physics code.
*
* 23 9/18/97 10:48p Lawrance
* comment out unused struct member
*
* 22 9/18/97 4:08p John
* Cleaned up & restructured ship damage stuff.
*
* 21 9/17/97 5:12p John
* Restructured collision routines. Probably broke a lot of stuff.
*
* 20 9/04/97 5:10p Andsager
* implement physics using moment of inertia and mass (from BSPgen).
* Added to phys_info struct. Updated ship_info, polymodel structs.
* Updated weapon ($Mass and $Force) and ship ($Mass -> $Density) tables
*
* 19 9/03/97 4:33p John
* changed bmpman to only accept ani and pcx's. made passing .pcx or .ani
* to bm_load functions not needed. Made bmpman keep track of palettes
* for bitmaps not mapped into game palettes.
*
* 18 8/26/97 3:31p Andsager
* scaled shockwave shake duration according to damage
*
* 17 8/05/97 1:25a Mike
* Make ship death roll be shortened by more damage.
*
* 16 7/31/97 5:55p John
* made so you pass flags to obj_create.
* Added new collision code that ignores any pairs that will never
* collide.
*
* 15 7/25/97 4:30p Andsager
* Save shockwave info
*
* 14 7/25/97 1:04p Andsager
* Modified physics flag PF_REDUCED_DAMP for damping when object is hit.
* Flag is now set in physics_apply_whack/shock and turned off in
* physics_sim_vel. Weapons should not directly set this flag.
*
* 13 7/22/97 2:40p Andsager
* shockwaves now cause proper rotation of ships
*
* 12 7/20/97 7:01p Lawrance
* changed names of anim_ files to be more consistent
*
* 11 7/18/97 10:52a Lawrance
* let player have some control when shockwave hits
*
* 10 7/17/97 8:02p Lawrance
* tweaking shockwave effect
*
* 9 7/16/97 5:51p Lawrance
* make shockwaves translucent
*
* 8 7/16/97 4:00p Lawrance
* render shockwaves by default
*
* 7 7/16/97 3:50p Lawrance
* render shockwaves first, to fake transparency
*
* 6 7/16/97 2:52p Lawrance
* make shockwaves objects
*
* 5 7/15/97 7:26p Lawrance
* make shockwave blast persist over time
*
* 4 7/09/97 1:56p Lawrance
* add savegame support for shockwaves
*
* 3 7/09/97 10:33a Lawrance
* make area-effect spheres translucent
*
* 2 7/08/97 6:00p Lawrance
* implementing shockwaves
*
* 1 7/08/97 1:30p Lawrance
*
* $NoKeywords: $
*/
#include "weapon/shockwave.h"
#include "render/3d.h"
#include "weapon/weapon.h"
#include "ship/ship.h"
#include "io/timer.h"
#include "globalincs/linklist.h"
#include "ship/shiphit.h"
#include "gamesnd/gamesnd.h"
#include "asteroid/asteroid.h"
#include "object/object.h"
// -----------------------------------------------------------
// Data structures
// -----------------------------------------------------------
// -----------------------------------------------------------
// Module-wide globals
// -----------------------------------------------------------
static char *Shockwave_filenames[MAX_SHOCKWAVE_TYPES] =
{
//XSTR:OFF
"shockwave01"
//XSTR:ON
};
shockwave Shockwaves[MAX_SHOCKWAVES];
shockwave_info Shockwave_info[MAX_SHOCKWAVE_TYPES];
shockwave Shockwave_list;
int Shockwave_inited = 0;
int defalt_shockwave_model = -1;
// -----------------------------------------------------------
// Function macros
// -----------------------------------------------------------
#define SW_INDEX(sw) (sw-Shockwaves)
// -----------------------------------------------------------
// Externals
// -----------------------------------------------------------
extern int Show_area_effect;
// ------------------------------------------------------------------------------------
// shockwave_create()
//
// Call to create a shockwave
//
// input: parent_objnum => object number of object spawning the shockwave
// pos => vector specifing global position of shockwave center
// speed => speed at which shockwave expands (m/s)
// inner_radius => radius at which damage applied is at maximum
// outer_radius => damage decreases linearly to zero from inner_radius to
// outer_radius. Outside outer_radius, damage is 0.
// damage => the maximum damage (ie within inner_radius)
// blast => the maximux blast (within inner_radius)
// sw_flag => indicates whether shockwave is from weapon or ship explosion
// delay => delay in ms before the shockwave actually starts
//
// return: success => object number of shockwave
// failure => -1
//
// Goober5000 - now parent_objnum can be allowed to be -1
int shockwave_create(int parent_objnum, vector *pos, shockwave_create_info *sci, int flag, int delay, int model)
{
if(model == -1)model = defalt_shockwave_model;
int i, objnum, real_parent;
shockwave *sw;
shockwave_info *si;
matrix orient;
for ( i = 0; i < MAX_SHOCKWAVES; i++ ) {
if ( !(Shockwaves[i].flags & SW_USED) ){
break;
}
}
if ( i == MAX_SHOCKWAVES ) {
return -1;
}
// real_parent is the guy who caused this shockwave to happen
if (parent_objnum == -1) { // Goober5000
real_parent = -1;
} else if ( Objects[parent_objnum].type == OBJ_WEAPON ){
real_parent = Objects[parent_objnum].parent;
} else {
real_parent = parent_objnum;
}
sw = &Shockwaves[i];
sw->model = model;
sw->flags = (SW_USED | flag);
sw->speed = sci->speed;
sw->inner_radius = sci->inner_rad;
sw->outer_radius = sci->outer_rad;
sw->damage = sci->damage;
sw->blast = sci->blast;
sw->radius = 1.0f;
sw->pos = *pos;
sw->num_objs_hit = 0;
sw->shockwave_info_index=0; // only one type for now... type could be passed is as a parameter
sw->current_bitmap=-1;
sw->time_elapsed=0.0f;
sw->delay_stamp = delay;
sw->rot_angle = sci->rot_angle;
si = &Shockwave_info[sw->shockwave_info_index];
// sw->total_time = i2fl(si->num_frames) / si->fps; // in seconds
sw->total_time = sw->outer_radius / sw->speed;
if ( (parent_objnum != -1) && Objects[parent_objnum].type == OBJ_WEAPON ) { // Goober5000: allow -1
sw->weapon_info_index = Weapons[Objects[parent_objnum].instance].weapon_info_index;
}
else {
sw->weapon_info_index = -1;
}
orient = vmd_identity_matrix;
objnum = obj_create( OBJ_SHOCKWAVE, real_parent, i, &orient, &sw->pos, sw->outer_radius, OF_RENDERS );
if ( objnum == -1 ){
Int3();
}
sw->objnum = objnum;
list_append(&Shockwave_list, sw);
return objnum;
}
// ------------------------------------------------------------------------------------
// shockwave_delete()
//
// Delete a shockwave
//
// input: object *objp => pointer to shockwave object
//
void shockwave_delete(object *objp)
{
Assert(objp->type == OBJ_SHOCKWAVE);
Assert(objp->instance >= 0 && objp->instance < MAX_SHOCKWAVES);
Shockwaves[objp->instance].flags = 0;
Shockwaves[objp->instance].objnum = -1;
list_remove(&Shockwave_list, &Shockwaves[objp->instance]);
}
// ------------------------------------------------------------------------------------
// shockwave_delete_all()
//
//
void shockwave_delete_all()
{
shockwave *sw, *next;
sw = GET_FIRST(&Shockwave_list);
while ( sw != &Shockwave_list ) {
next = sw->next;
Assert(sw->objnum != -1);
Objects[sw->objnum].flags |= OF_SHOULD_BE_DEAD;
sw = next;
}
}
// Set the correct frame of animation for the shockwave
void shockwave_set_framenum(int index)
{
int framenum;
shockwave *sw;
shockwave_info *si;
sw = &Shockwaves[index];
si = &Shockwave_info[sw->shockwave_info_index];
framenum = fl2i(sw->time_elapsed / sw->total_time * si->num_frames + 0.5);
// ensure we don't go past the number of frames of animation
if ( framenum > (si->num_frames-1) ) {
framenum = (si->num_frames-1);
Objects[sw->objnum].flags |= OF_SHOULD_BE_DEAD;
}
if ( framenum < 0 ) {
framenum = 0;
}
sw->current_bitmap = si->bitmap_id + framenum;
}
// ------------------------------------------------------------------------------------
// shockwave_move()
//
// Simulate a single shockwave. If the shockwave radius exceeds outer_radius, then
// delete the shockwave.
//
// input: ojbp => object pointer that points to shockwave object
// frametime => time to simulate shockwave
//
void shockwave_move(object *shockwave_objp, float frametime)
{
shockwave *sw;
object *objp;
float blast,damage;
int i;
Assert(shockwave_objp->type == OBJ_SHOCKWAVE);
Assert(shockwave_objp->instance >= 0 && shockwave_objp->instance < MAX_SHOCKWAVES);
sw = &Shockwaves[shockwave_objp->instance];
// if the shockwave has a delay on it
if(sw->delay_stamp != -1){
if(timestamp_elapsed(sw->delay_stamp)){
sw->delay_stamp = -1;
} else {
return;
}
}
sw->time_elapsed += frametime;
/*
if ( sw->time_elapsed > sw->total_time ) {
shockwave_objp->flags |= OF_SHOULD_BE_DEAD;
}
*/
shockwave_set_framenum(shockwave_objp->instance);
sw->radius += (frametime * sw->speed);
if ( sw->radius > sw->outer_radius ) {
sw->radius = sw->outer_radius;
shockwave_objp->flags |= OF_SHOULD_BE_DEAD;
return;
}
// blast ships and asteroids
for ( objp = GET_FIRST(&obj_used_list); objp !=END_OF_LIST(&obj_used_list); objp = GET_NEXT(objp) ) {
if ( (objp->type != OBJ_SHIP) && (objp->type != OBJ_ASTEROID) ) {
continue;
}
if ( objp->type == OBJ_SHIP ) {
// don't blast navbuoys
if ( ship_get_SIF(objp->instance) & SIF_NAVBUOY ) {
continue;
}
}
// only apply damage to a ship once from a shockwave
for ( i = 0; i < sw->num_objs_hit; i++ ) {
if ( objp->signature == sw->obj_sig_hitlist[i] ){
break;
}
}
if ( i < sw->num_objs_hit ){
continue;
}
if ( weapon_area_calc_damage(objp, &sw->pos, sw->inner_radius, sw->outer_radius, sw->blast, sw->damage, &blast, &damage, sw->radius) == -1 ){
continue;
}
// okay, we have damage applied, record the object signature so we don't repeatedly apply damage
Assert(sw->num_objs_hit < SW_MAX_OBJS_HIT);
if ( sw->num_objs_hit >= SW_MAX_OBJS_HIT) {
sw->num_objs_hit--;
}
switch(objp->type) {
case OBJ_SHIP:
sw->obj_sig_hitlist[sw->num_objs_hit++] = objp->signature;
ship_apply_global_damage(objp, shockwave_objp, &sw->pos, damage );
weapon_area_apply_blast(NULL, objp, &sw->pos, blast, 1);
break;
case OBJ_ASTEROID:
asteroid_hit(objp, NULL, NULL, damage);
break;
default:
Int3();
break;
}
// If this shockwave hit the player, play shockwave impact sound
if ( objp == Player_obj ) {
snd_play( &Snds[SND_SHOCKWAVE_IMPACT], 0.0f, max(0.4f, damage/Weapon_info[sw->weapon_info_index].damage) );
}
} // end for
}
// ------------------------------------------------------------------------------------
// shockwave_render()
//
// Draw the shockwave identified by handle
//
// input: objp => pointer to shockwave object
//
extern int Cmdline_nohtl;
bool rendering_shockwave = false;
void shockwave_render(object *objp)
{
shockwave *sw;
shockwave_info *si;
vertex p;
Assert(objp->type == OBJ_SHOCKWAVE);
Assert(objp->instance >= 0 && objp->instance < MAX_SHOCKWAVES);
sw = &Shockwaves[objp->instance];
si = &Shockwave_info[sw->shockwave_info_index];
int shockwave_model = sw->model;
if( (sw->delay_stamp != -1) && !timestamp_elapsed(sw->delay_stamp)){
return;
}
if ( sw->current_bitmap < 0 ){
return;
}
// turn off fogging
if(The_mission.flags & MISSION_FLAG_FULLNEB){
gr_fog_set(GR_FOGMODE_NONE, 0, 0, 0);
}
if(shockwave_model > -1){
float model_Interp_scale_x = sw->radius /40;
float model_Interp_scale_y = sw->radius /40;
float model_Interp_scale_z = sw->radius /40;
set_warp_globals(model_Interp_scale_x, model_Interp_scale_y, model_Interp_scale_z, -1, 1.0f - (sw->radius/sw->outer_radius) );
float dist = vm_vec_dist_quick( &sw->pos, &Eye_position );
model_set_detail_level((int)(dist / (sw->radius * 10.0f)));
gr_set_cull(0);
rendering_shockwave = true;
model_render( shockwave_model, &Objects[sw->objnum].orient, &sw->pos, MR_NO_LIGHTING | MR_NORMAL | MR_CENTER_ALPHA | MR_NO_CULL);
rendering_shockwave = false;
gr_set_cull(1);
model_Interp_scale_x = 1.0f;
model_Interp_scale_y = 1.0f;
model_Interp_scale_z = 1.0f;
set_warp_globals(model_Interp_scale_x, model_Interp_scale_y, model_Interp_scale_z, -1, -1.0f);
}else{
if(!Cmdline_nohtl)g3_transfer_vertex(&p, &sw->pos );
else g3_rotate_vertex(&p, &sw->pos );
gr_set_bitmap(sw->current_bitmap, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, 1.3f );
if(Cmdline_nohtl)g3_draw_rotated_bitmap(&p, fl_radian(sw->rot_angle), sw->radius, TMAP_FLAG_TEXTURED);
else g3_draw_rotated_bitmap(&p, fl_radian(sw->rot_angle), sw->radius, TMAP_FLAG_TEXTURED | TMAP_HTL_3D_UNLIT);
}
}
// ------------------------------------------------------------------------------------
// shockwave_init()
//
// Call once at the start of each level (mission)
//
void shockwave_level_init()
{
int i;
shockwave_info *si;
// load in shockwaves
for ( i=0; i<MAX_SHOCKWAVE_TYPES; i++ ) {
si = &Shockwave_info[i];
si->bitmap_id = bm_load_animation( Shockwave_filenames[i], &si->num_frames, &si->fps, 1 );
if ( si->bitmap_id < 0 ) {
Error(LOCATION, "Could not load %s anim file\n", Shockwave_filenames[i]);
}
}
list_init(&Shockwave_list);
for ( i = 0; i < MAX_SHOCKWAVES; i++ ) {
Shockwaves[i].flags = 0;
Shockwaves[i].objnum = -1;
}
mprintf(("loading defalt shockwave model"));
defalt_shockwave_model = -1;
defalt_shockwave_model = model_load("shockwave.pof", 0, NULL, 0);
mprintf((" %d\n", defalt_shockwave_model));
Shockwave_inited = 1;
}
// ------------------------------------------------------------------------------------
// shockwave_level_close()
//
// Call at the close of each level (mission)
void shockwave_level_close()
{
if(Shockwave_inited){
shockwave_delete_all();
}
Shockwave_inited = 0;
}
// ------------------------------------------------------------------------------------
// shockwave_close()
//
// Called at game-shutdown to
//
void shockwave_close()
{
}
// ------------------------------------------------------------------------------------
// shockwave_move_all()
//
// Simulate all shockwaves in Shockwave_list
//
// input: frametime => time for last frame in ms
//
void shockwave_move_all(float frametime)
{
shockwave *sw, *next;
sw = GET_FIRST(&Shockwave_list);
while ( sw != &Shockwave_list ) {
next = sw->next;
Assert(sw->objnum != -1);
shockwave_move(&Objects[sw->objnum], frametime);
sw = next;
}
}
// ------------------------------------------------------------------------------------
// shockwave_render_all()
//
//
void shockwave_render_all()
{
shockwave *sw, *next;
sw = GET_FIRST(&Shockwave_list);
while ( sw != &Shockwave_list ) {
next = sw->next;
Assert(sw->objnum != -1);
shockwave_render(&Objects[sw->objnum]);
sw = next;
}
}
// return the weapon_info_index field for a shockwave
int shockwave_weapon_index(int index)
{
return Shockwaves[index].weapon_info_index;
}
// return the maximum radius for specified shockwave
float shockwave_max_radius(int index)
{
return Shockwaves[index].outer_radius;
}
void shockwave_page_in()
{
int i;
shockwave_info *si;
// load in shockwaves
for ( i=0; i<MAX_SHOCKWAVE_TYPES; i++ ) {
si = &Shockwave_info[i];
bm_page_in_texture( si->bitmap_id, si->num_frames );
}
}
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